I mean you are always learning, All the time.
It’s a defence mechanism that we use to stop ourselves from shooting towards bigger targets.
Everyone is faking. No one knows for sure. Fake it till you make it is real.
In my over 8 years working in the software industry I realised you never possibly going to know solutions to every problem and in order to sit at the table you don’t have to know everything you just need to know enough and willing to learn as much as you can.
You need to be willing to keep your mind open and keep improving. That’s what All you need.
Don’t be an expert, be willing to learn and improve.